Category Screen Functions

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Screen Functions

Grouped by task. Graphics and windows lists them beside the rest of the area.

Open a graphics window

Function	What it does	From
ScreenRes	Opens a graphics window of a given width, height and colour depth.	built-in
Screen	Opens a graphics mode by mode number, or picks the work and visible pages.	built-in
WindowTitle	Sets the title of the graphics window.	built-in
ScreenList	Returns the fullscreen resolutions for a colour depth, one per call, then 0.	built-in
ScreenInfo	Fills in the screen's width, height, depth and driver, or the desktop's if none is open.	built-in
ScreenControl	Sets or reads graphics library settings, such as the driver or the window position.	built-in
ScreenGLProc	Returns the address of an OpenGL procedure by name, or 0 if it is not found.	built-in

Draw lines, shapes and pixels

Function	What it does	From
Draw	Draws a figure from a string of pen commands such as "U10 R10".	built-in
PointCoord	Returns the x or y position of the Draw pen.	built-in

Draw without flicker

Function	What it does	From
ScreenLock	Stops screen updates while you draw, so the user never sees half a frame.	built-in
ScreenUnlock	Resumes screen updates after ScreenLock and shows what was drawn.	built-in
ScreenSet	Sets which page is drawn on and which page is shown.	built-in
ScreenCopy	Copies one graphics page onto another, by default the work page onto the shown one.	built-in
PCopy	Copies one graphics or text page onto another.	built-in
Flip	Shows the OpenGL back buffer, or copies a page as ScreenCopy does in other modes.	built-in
ScreenSync	Waits for the display to finish drawing a frame, to reduce flicker.	built-in
ScreenPtr	Returns a pointer to the work page's pixels, or 0 if no graphics mode is set.	built-in

Set the drawing area and coordinates

Function	What it does	From
View	Sets the rectangle that drawing is clipped to, or resets it to the whole screen.	built-in
Window	Sets the coordinate system mapped onto the current view.	built-in
PMap	Converts a coordinate between the Window system and physical pixels.	built-in

Read the mouse, keyboard and joystick

Function	What it does	From
ScreenEvent	Returns -1 if a mouse, keyboard or window event is waiting, and fetches it.	built-in
Event	Holds one event fetched by ScreenEvent: its type and its key or mouse data.	fbgfx.bi

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